Envelope



FIG. 1 is a front perspective view of an envelope showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a partly cross-sectional perspective view thereof;

FIG. 8 is an enlarged view of a circled portion 8 of FIG. 1; and,

FIG. 9 is an enlarged view of a circled portion 9 of FIG. 7.

The broken lines in the drawings depict portions of the envelope that form no part of the claimed design. 

CLAIM The ornamental design for an envelope, as shown and described. 